Walking shoe sole



FIG. 1 is a bottom and right side perspective view of a shoe sole showing my new design, the broken line disclosure of a shoe being for illustrative purposes only and forming no part of the claimed design, showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a front elevational view thereof; and,

FIG. 7 is a rear elevational view thereof. 

The ornamental design for a walking shoe sole, as shown and described. 